Wrench.



S. ZWIOK. WRENCH.

APPLICATION FILED mm; 12, 1914.-

' *1.-114;423. ifatented 0ct.30,1914.

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ED STATES PATENT oFEroE.

SAMUEL ZWICK, OF SOUTH MANCHESTER, connections.

w'nnncn.

Application filed June 12,

Specification of Letters Patent.

Patented Oct. 20. 1 914. 1914. Seria1 No.84;4,766.

To all whom it may concern:

Be it known that I, SAMpEL ZWIGK, a sub ject of the King of Austria-Hungary, resid- "mg at South Manchestenin the county of Hartford and State of Connecticut, have invented certain new and useful Improve stationary jaw and a slidable jaw adjustably mounted relative to the stationary jaw.

The object of my invention is to provide a wrench of the above described type which shall be simple in construction, cheap to manufacture and effective in operation.

Another object of my invention is to provide an effective locking means for the slid-. able jaw of a wrench of the above character. Another object ofmy invention is to provide a means that automatically disengages the locking means on the slidable jaw to allow of the movement of the same.

With the above and other objects in view my invention resides in the construction, combination and arrangement of the parts .as set forth in the following specification and illustrated in the accompanying drawings, in which-: Figure 1 is a side elevation of a wrench in which the preferred form of my invention is embodied. Fig. 2 is a like view having the slidable jaw in section so as to show the interior of the same. Fig. Bis a transverse sectional view taken on the line 3-3 of Fig.2. I

Similar reference characters indicate similar parts throughout the various-views of the drawings.

Referring more particularly to the drawings in which the preferred embodiment of my invention is shown, thenumeral lindi= cates the handle of a wrench and 2 indicates the shank of the same having one edge thereof provided with a pluralityof teeth 3.

4 indicates the stationary jaw integrally formed with the shank 20f the wrench.

In the preferred form of my invention I provide a sl'idable jaw 5, which in the present instance comprising a U-shaped' portion 6 which isadapted to embrace the shank 2 of the wrench, the sides of the U-shaped portion 6 are adapted to engage inthe out out portion 8 of the jaw 5 and be secured thereto by means of the screws 9i While I have el -case parts as fornied detachably it.

will be readily understood that the same may be cast in one'solid piecehaving a central opening therethrough to, receive the shank 2. ,The portion of the jaw 5 adjacent the teethl; of the shank 2 is provided with a ridge 10,, having complementalj teeth 11 for engaging {with the teeth 3 formed thereon. Springs 12 are provided fordisengaging the aforesaid teeth 11 and 3, each of the springs l12 having an end thereof seci red to the jaw *5 on the ledge or flange 13formed on the aforesaid jaw 5, the opposite, tnds of the 3 springs. 12- being adapted. to engage the under surface of the shank 2 and bent, to force the 1 same away from the jaw 5. To look the said teeth 11 and- 3, I provide-a cam member '14, pivoted in an opening 15, on a pin 16', in the U-shaped portion 6, the cam portion 17 thereof being adapted to engage theupper edge 18 of the shank 2, and when the .cam is; in position as shown in Fig. 2, the xteeth 11 and 3 will be engaged, thereby preventing longitudinal movement of the jaw 5 relative ,to the shank 2. The handleportiori19 of ;the cam member 14-. is adapted to seat in a ent-out portion 20 of the said U-shaped member 6 whereby to prevent accidental movement of the cam member 14. The stationary jaw iinay be used as a hammer, and the end of the handle 1 is provided with tapered portion 21 to serve as a screw "drifiifi From the above; itwill be seen'that I have provided a simple arid effective means for locking the slidable jaw of a wrench at any position along the length of the shank of said wrench. To operate my improved locking means, when it is desired to move the jaw 5 along the shank 2, the cam member is raised. The springs 12 will now force the teeth 11 on the jaw 5 out of engagement with.

the teeth 3 on the shank 2, thereby allowing the said jaw 5 to be moved longitudinally on the shank 2, adjusted to any position; Vhen the" desired point is reached, where it is wished to lock the jaw 5, the cam member the u -shaped member 6' and the upper face 18oF the shank 2, so as to allow of vertical movement of the U-shaped member, and disengagement of the teeth 11 and 3.

ion

'While I have shown'and describedas ecific'form of my invention, it will be rea ily understood by I may make such minor-changes in the details of'construction'as will not depart from the spirit and scope of the appended claims. What I desire to secure by lsFh H i Q 1' A wrench,'1nclu(i1ng a shank having a rigid jaw on one end thereof, an inner toothed jaw slidably mounted on said shank, teeth onijsaid' shank adapted to engage the teeth onrthe jaw, a cam member for facilitating the engagement of said teeth, and

- spring members supported on said slidable jaw in spring pressed relation with one of .the edges of the said shank on each, side of the toothed portion thereotvwhereby to insurean even distribution of the pressure of the spring.

.-.-.2; A wrench, including having a for causing engagement with the aforesaid those versed in the art that Letters Patent teeth, springs on said inner jaw, said springs embracing the teeth of said shank and inner jaw, and the ends of said springs being pressed against one of the edges oi: the shank, whereby to force the said shank out of engagement with the teeth on the inner jawl ivhen the cam member is released.

3. A wrench, including a shank having a rigid .j aw on one end thereof, an inner jaw slidable on said shank, teeth on one edge of said shank adapted to engage with teeth on the inner jaw, means comprising flat spring elements carried by the movable jaw, and disposed on each'side of the toothed portion of the shank, said fiat spring elements havingvtheir free ends oppositely disposed on the movable jaw to insure a distribution of the pressure, and 'a cam member on said inner jaw for facilitating the engagement of the teeth. r 1

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL ZWICK.

Witnesses:

AUSTIN H. KNIVER,

WILLIAM S. HYDE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

